16151161616 has 20 divisors (see below), whose sum is σ = 31330649100. Its totient is φ = 8065832832.

The previous prime is 16151161589. The next prime is 16151161619. The reversal of 16151161616 is 61616115161.

It can be written as a sum of positive squares in 2 ways, for example, as 12055161616 + 4096000000 = 109796^2 + 64000^2 .

It is not an unprimeable number, because it can be changed into a prime (16151161619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595571 + ... + 622098.

It is an arithmetic number, because the mean of its divisors is an integer number (1566532455).

Almost surely, 2^16151161616 is an apocalyptic number.

16151161616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16151161616 is a deficient number, since it is larger than the sum of its proper divisors (15179487484).

16151161616 is a wasteful number, since it uses less digits than its factorization.

16151161616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218506 (or 1218500 counting only the distinct ones).

The product of its digits is 6480, while the sum is 35.

Adding to 16151161616 its reverse (61616115161), we get a palindrome (77767276777).

The spelling of 16151161616 in words is "sixteen billion, one hundred fifty-one million, one hundred sixty-one thousand, six hundred sixteen".